NYC-WTC_000214434

NYC 9/11 Public Portal Document

TEM Asbestos (air) Couiu Sj Client Name: NYC BOE I. ers): 1920 Lab Group #: 7855 Filte.'- : . . . rea: MCE 385 mm^ Lab Sample #: 7 ' Size: 0.01124 Client Sample #: 07 4 It ned: 0.04496

GRID BOX: lion: 20,000 GRID ID: age: 100 KeV # Grid Openings: 4 ->ate: 5/25/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length N or 'Z EDS No (Nonadb F B C M >=05 M Chrys । -• sb Ambig/ND Elements) No Coord <5p

____ .g

Struct = >0.5p >5:1 Aspect Ratio Grid acceptance; '/= Positive diffraction pattern properties conforming to *^0% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed AMPHIBOLES F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite C = Cluster (>3 Intersections) Anthophyllite • or M = Matrix Tremolite Actinolite NSD = No Structures Detected

CITY_21MC100_b00462800 NYC-WTC_000214434